M. Dowse, A. Butterfield, M. van Eekelen , M. de Mol , R. Plasmeijer

M. Dowse, A. Butterfield, M. van Eekelen , M. de Mol , R. Plasmeijer

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by Nijmegen Institute For , M. Dowse , A. Butterfield , M. Van Eekelen , M. De Mol , R. Plasmeijer , Malcolm Dowse

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Datum	Value	Source
TITLE	M. Dowse, A. Butterfield, M. van Eekelen , M. de Mol , R. Plasmeijer	user correction - Legacy Corrections
AUTHOR NAME	Nijmegen Institute For	user correction - Legacy Corrections
AUTHOR NAME	M. Dowse	user correction - Legacy Corrections
AUTHOR AFFIL	Nijmegen Institute for Computing and Information Sciences/	user correction - Legacy Corrections
AUTHOR NAME	A. Butterfield	user correction - Legacy Corrections
AUTHOR NAME	M. Van Eekelen	user correction - Legacy Corrections
AUTHOR NAME	M. De Mol	user correction - Legacy Corrections
AUTHOR NAME	R. Plasmeijer	user correction - Legacy Corrections
AUTHOR AFFIL	Nijmegen Institute for Computing and Information Sciences; Faculty of Science; Catholic University of Nijmegen	user correction - Legacy Corrections
AUTHOR ADDR	Toernooiveld 1; 6525 ED Nijmegen; The Netherlands	user correction - Legacy Corrections
AUTHOR NAME	Malcolm Dowse	user correction - Legacy Corrections
AUTHOR AFFIL	; Trinity College, Dublin University,Ireland,; Marko van Eekelen, Maarten de Mol and Rinus Plasmeijer,; Department of Software Technology, University of Nijmegen	user correction - Legacy Corrections
AUTHOR ADDR	; The Netherlands	user correction - Legacy Corrections
ABSTRACT	In functional languages, the shape of the external world affects both our understanding of I/O and how we would wish to have I/O expressed. This paper takes the first tentative steps at examining the consequences of using an explicit model of the external world-state when reasoning (using tool-support) about the behaviour of lazy functional programs. We construct a file-system model and develop a monadic language which lets us structure I/O. Two proofs are then performed regarding the observable e#ect of real-world functional I/O, and it is shown how properties of the file-system lend themselves naturally to the modelling of concurrent behaviour on a single, global state. All proofs in this paper were machine-verified using the Sparkle proof-assistant.	user correction - Legacy Corrections
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